2005 Alpina B3 vs. 1981 BMW 745
To start off, 2005 Alpina B3 is newer by 24 year(s). Which means there will be less support and parts availability for 1981 BMW 745. In addition, the cost of maintenance, including insurance, on 1981 BMW 745 would be higher. At 3,430 cc (6 cylinders), 1981 BMW 745 is equipped with a bigger engine. In terms of performance, 2005 Alpina B3 (301 HP @ 6300 RPM) has 49 more horse power than 1981 BMW 745. (252 HP @ 5200 RPM). In normal driving conditions, 2005 Alpina B3 should accelerate faster than 1981 BMW 745. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 745 weights approximately 140 kg more than 2005 Alpina B3.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1981 BMW 745 (380 Nm @ 2200 RPM) has 18 more torque (in Nm) than 2005 Alpina B3. (362 Nm @ 4800 RPM). This means 1981 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2005 Alpina B3.
Compare all specifications:
2005 Alpina B3 | 1981 BMW 745 | |
Make | Alpina | BMW |
Model | B3 | 745 |
Year Released | 2005 | 1981 |
Body Type | Convertible | Sedan |
Engine Position | Front | Front |
Engine Size | 3346 cc | 3430 cc |
Engine Cylinders | 6 cylinders | 6 cylinders |
Engine Type | in-line | in-line |
Horse Power | 301 HP | 252 HP |
Engine RPM | 6300 RPM | 5200 RPM |
Torque | 362 Nm | 380 Nm |
Torque RPM | 4800 RPM | 2200 RPM |
Engine Bore Size | 87 mm | 92 mm |
Engine Stroke Size | 93.8 mm | 86 mm |
Engine Compression Ratio | 10.0:1 | 8.0:1 |
Top Speed | 270 km/hour | 220 km/hour |
Drive Type | Rear | Rear |
Number of Seats | 4 seats | 5 seats |
Number of Doors | 2 doors | 4 doors |
Vehicle Weight | 1450 kg | 1590 kg |
Vehicle Length | 4480 mm | 4870 mm |
Vehicle Width | 1760 mm | 1810 mm |
Vehicle Height | 1400 mm | 1440 mm |
Wheelbase Size | 2730 mm | 2800 mm |
Fuel Tank Capacity | 63 L | 100 L |